Thin lining during first U/S on medicated FET, will it get thicker?

Had my first scan today at CD12 and lining is only 0.56mm…. I’m on a medicated cycle (2 x estrace vaginally, estrogen patches). Historically my lining would be around 0.67 to 0.7mm by now so I’m worried… will it continue to get thicker and is there anything else I can do other than wait for it to get thicker? My clinic wants 0.7mm min for transfer.

Thanks